SPI Minerals Group

	Element	%		Oxide	%		chlorite
	H	1.54		H2O	13.76				This is a reflected light micrograph of a polished, carbon coated chlorite crystal. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Chlorite is a flexible platy mineral which rarely forms large crystals. In this case the crystal is seen edge-on, with sheaf-like flakes at the top. The name refers to the green color of most crystals (Greek chloros = green). This sample is the variety clinochlore. Locality: West Chester, PA, USA
	C	0.02		CO2	0.07
	O	51.14
	F	0.02		F	0.02
	Mg	20.21		MgO	33.51
	Al	9.57		Al2O3	18.08
	Si	14.04		SiO2	30.04
	Ca	0.02		CaO	0.03
	Cr	0.67		Cr2O3	0.98
	Fe	2.57		FeO	3.31
	Ni	0.19		NiO	0.24
	Sum	100.0		Sum	100.0

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Name	Description	SPI #	Each
Chlorite	SPI SuppliesŪ Individual Mounted Microanalysis Standard Item	AS1110-AB	$199.56